Je was op zoek naar: fallacirum fallere (Latijn - Engels)

fallere
fallo, fallere, fefelli, falsus deceive; slip by; disappoint; be mistaken, beguile, drive away; fail; cheat;

fidem fallere
fidem fallere

prius mori quam fallere fidem
yield to death rather than betray trust

at secura quies et nescia fallere vita, dices opus variarum, at latis otia fundis
repose without that knows no falsehood

et ait moses egressus a te orabo dominum et recedet musca a pharaone et a servis et a populo eius cras verumtamen noli ultra fallere ut non dimittas populum sacrificare domin
and moses said, behold, i go out from thee, and i will intreat the lord that the swarms of flies may depart from pharaoh, from his servants, and from his people, to morrow: but let not pharaoh deal deceitfully any more in not letting the people go to sacrifice to the lord.